Machine for stripping oil cakes



K. C(BARTON.

MACHINE FOR STRIPPING OIL CAKES. APPLICATION FILED AUG 16, 1920.

1,439,61 3., Patented Oct. 3, 1922,

12 F -1 EI if INVENTORQ K/RT'L/AND c. BARTON,

kra'rnann o. salmon, or rinrroivnr. orrY, ILLINOIS.

MACHINE FOR STRIPTPING- OIL CAKES;

Application filed august 16, 1920. Serial No. 403,758.

To aZZ whom it may concern Be it known that I, KIRTLAND C. BARTON,

a citizen of the United States, residing at cakes without causing injury or damage to the cloth.

Another object of the invention is to provide a device for. stripping cloth from oil cakes, comprising an electromagnet mounted on and rotating with a rotary shaft, and being operative to attract and hold in connection therewith a metallic member se cured to the cloth, whereby the cloth will be wound around the electromagnet it is stripped from the oil cake.

Another object of the invention is to provide means for de-energizing the electromagnet as an incident to the reversing of the direction of rotation of the shaft and the electromagnet on which the latter is mounted, in order to permit unwinding and free removal of the cloth.

Another object of the invention is to provide a machine for stripping oil cakes which may be safely operated without danger of maiming or injuring the operator which is an inherent objection to machines at present in use equipped with hook-shaped cloth-gripping elements for engaging cloth. The hooks sometimes catch into the clothing of the operator of the machine, or into the flesh of the arms and hands resulting in serious injuries. My present invention eliminates nearly all danger to the operator and overcomes variout other objections.

Various other objects and advantagesof the invention will appear from the following description in which reference is made to the drawing, and in which-- Fig. 1 is a plan view of a machine equipped with the present invention.

Fig. 2 is an elevation of the invention looking from the side at which the operator of the machine stands.

Fig. 3 is an end elevation.

Fig. l is a view showing the metallic plate in. connection with the cloth, which 1 The shaft 2 is drawn in engagement with the magnet as the machine is operated.

The machine in which my present invention isembodied comprises a table 1 which supports the operative mechanism by which the cloth is strippedfrom the oil cakes. is supported horizontally above the table for rotation in opposite directions. It is known thatthe shaft 2 is rotated in one direction to strip the cloth shaft and an intermediate pulley a which isfast on the shaft. A belt 5 is provided for driving the pulley 4: in one direction and a belt 6 is provided for driving thepulley 4 in the opposite direction to reverse the direction of rotation of the shaft, The machine also includes the usual belt shifter 7 by which the belts 5 and 6 may be shifted. It is understood, of course, that when the belt 5 is on one of the pulleys 3 the belt 6 is on the pulley i, and vice versa. It is in a machine of the type above described that my present invention is embodied.

My present invention comprises an electromagnet 8 removably secured upon the shaft 2 above the table 1 and including a number of washers 9 having shoulders 10 thereon. The electromagnet is energized from a source of electrical energy as an incident to rotation of the shaft 2 in one direction; and the electromagnet is deener- .gized automatically and as an incident to and the other of which maybe circuit'ed with the other circuit wire 13. The wiring 1415 from the electromagnet is connected up with the rings 11 respectively, so that when the circuit wire 13 is in circuit with the corresponding ring 11, the magnet is energized. However, when the Connection from the wire 13 to the corresponding ring 11 is broken the magnet is Clo-energized. My invention comprises means for de-energizing the magnet as an incident to the change of direction of rotation of the shaft 2. Obviously, this part of the invention might be made in many forms and I have found that form shown in the drawing to be satisfactory.

As shown, the belt shifting device 7 is operatively connected with a treadlelever 16, said lever being mounted on a pivot 17 and supporting a brush 1S movable into and out of contact with one of the rings 11 be energized. However, if the lever 16 be operated to shift the belts 5 and 6 to place the. belt 5 on one of the pulleys 3 and to place the belt 6 on the pulley 1, to change the direction of rotation of the shaft 2, the brush 18 is thereby'moved out of contact with the corresponding ring 11, thus opening the circuit and de-energizing the magnet. The brush 18 may be maintained in circuit with the wire 13 by any suitable construction, onesuch device being shown at 19.

QMy invention comprises also the provision of a metallic memberin connection w ththe cloth, which will be drawn into engagement with the electromagnet automatically when the cake and cloth are placed upon the table and the machine is operated with the electromagnet energized. As shown, I provide a resilient metallic strip 20 supported'from oncfen'd of the cloth by flexible connections 21fwhich may be composed of strips of wire cloth or gauze having their outer ends secured to the plate or strip 20 and their opposite ends secured to the end of the cloth. As shown, the parts 21 may be secured to 'theend of the cloth by transverse rows of stitches 22 which reinforce the. cloth.

In operation the oil cake with the cloth thereon is placed upon the table 1 in about the position shown. The shaft 2 is rotated in" a counterclockwise direction (Fig. 2), the electromagnet being energized when the shaft is so rotated. The plate 20 is attracted to and held in connection with the electromagnet by the energy of the magnet; 1 but should the plate slip upon the magnet -"from' the cake the shaft and magnet are driven in the direction opposite from that in which they were rotated during the wind-- ing of the cloth. To effect this reversal of operation of the shaft the belt shifting device 16-17 is operated, which also opens the circuit thereby de-energizing the electromagnet. This reverse rotation of the de vice unwinds the cloth and, since the magnet is de-energized, there is'nothing to hold the plate 20, so'that the cloth may be easily taken off.

The machine may be rapidly operated, and the energizing and de-energizing of the magnet is automatically effected as an incident to the operations in which such results are desired. The form of the invention may be varied within equivalent limits without departure from the principle of the invention.

I do not restrict myself to unessential features, but what I .claimand desire to secure by Letters Patent, is v 1. In a machine for stripping oil cakes and the like, an electromagnet, means for rotating the electromagnet in onedirection, an electric circuit for energizing the elec-- tromagnet, means for keeping the electric circuit closed to energize the electromagnet, while the electromagnet is rotating in said direction, means for engaging a cloth with the electromagnet, a device for reversing the direction of rotation of the electromagnet, and means controlled by said device for opening the electric circuit to de-energize said magnet when said device is operated. toreverse the direction of rotation of the electromagnet.

2. In a machine for stripping oil cakes and the like, an electromagnet, means for energizing the electromagnet, means for rotating the electromagnet, and means for engaging a cloth with the magnet.

3. In a machine for stripping oil cakes and the like, the combination with a shaft and mechanism for rotating said shaft in alternately opposite directions, of an electromagnet mounted on and rotating with said shaft, and means for engaging a cloth with said magnet.

4. Ina machine of the character described, the combination with a shaft and means for rotating said shaft in alternately opposite directions, of an electromagnet; mounted on said shaft, means for energizing the electromagnet when the magnet rotates in one direction and tie-energizing the electromagnet when it rotates in the opposite direction, means for energizing said magnet when said shaft is rotating in one direction, and means for engaging a cloth with said magnet,

5. In a machine of the character described, the combination with a shaft and means for rotating said shaft in alternately opposite directions, of an electromagnet rotating with said shaft, means for energizing Said ma net when said shaft rotates in one tating With said shaft, means for energizing said magnet when said shaft rotates in one direction, means for tie-energizing said mag- 10 net when said shaft rotates in the opposite direction, and means for engaging a cloth with said magnet.

KIRTLAND C. BARTUN. 

